Attachment for looms



` E. E. WEBB. ATTACHMENT FOR LOOMS.

APPLICATION lFILED [JEC.26| 15H9.

1,390,943, ,Patendsepn 13,1921.

UNITED STAT-Es',

PATENT OFFICE.

mm1* E. WEBB, 0l' BALTIIOBE. mYLLN'D, ASSIGNGB, BY DIRECT AND HERNE ABSIGNIENTB, 0I OIE-THIRD T0 GEORGE D. I'BYTOGLE moNn-T'mn'ro EUGENE H. mms, BOTH 0F BALTIIORE,

ATTASmNT FOB. LOOKS.

Application Med December 26, 1919. Serial lo. 347,801.

vments in Attachments for Looms, of which the following is a specification.

My said invention relates to an attachment for looms, particularly looms of the type that are provided with automatic devices for discharging the bobbins when empty and replacing them with full bobbins. In such machines, as is well understood, when an empty bobbin is discharged from the shuttle, the free end of the yarn is left hanging and often is caught by the iiying shuttle and carried into the warp resulting in weavingin double and an imperfect spot in the woven fabric.

Various attempts have been made to remove the free end of yarn from the shuttle, as set forth in the patent to Hedler, 1,275,684, but for reasons therein set forth the expedients heretofore resorted to have not been entirely satisfactory.

The object of my said invention is to overcome ,this trouble and this I accomplish by providing an attachment which is positively actuated throughout and certain 1n its action for catching this free end of the weft or filling thread and throwing it away from the shuttle box and clear of the liying shuttle.

Referring to the accompanyin ldrawings which are made a part hereof an on which similar reference' characters indicate similar parts.

Figure 1 is an end elevation of aportion of a loom showingl my improved attachment in the position it occupies thereon, parts of the loom being shown in section for the purpose of more clearly illustrating the construction and arrangement of the arts,

Fig. 2, a detail front elevation s owing a portion of the machine and the attachment on an enlarged scale,

Fig. 3, a detail section on the dotted line 3--3 in Fig. 1, and

Fig. 4, a perspective view of one of the parts.

In said drawings the rtion marked 10 is the main frame of the oom. Said frame has bearings in which the crankshaft 11 is which the cam shaft 12 isjour'naled. On crank 13 of shaft 11 is mounted a pitman rod14 pivotally connected to the lay 15 -ofthe loom, inthe usual manner.

A bobbin magazine. 16 with the usual bobb1 n ejectmg mechanism 17, of a common type, is mounted above the lay inthe usual manner as shown in Fig. 1.

As will bev understood, the mechanism above dscribed is of a usual or any appropriate construction and arrangement and is only illustrated for the purpose of making .Spedition of Letters ment Patented Sept.` 13, 1921. i

journaled and other bearings in the construction and arrangement of the at- A tachment and its operation more easily understood. A detalled description 0f said mechanism is therefore thought to be un-V necessary.

My said attachment consists of a member 18 of a form best illustrated in Fig. 4, having a central bearing and mounted to rock on a shaft 19 which is carried by an angle bracket 20 bolted to the side of the frame 10 beneath the magazine 16. The downl wardly projecting end 21 of said member 18 is connected by an adjustable connecting rod 22 with a crank pin 23 adjustably mounted in a slot 24 on a crank-arm 25 secured to the cam shaft 12 of the machine.

' The other end of member 18 is formed with an L-shaped arm 26 provided with a threaded opening adapted to receive an adjustin screw 27 for a purposeto be presently escribed. A plate 28 with a hob 29 is mounted to swing on a shaft 30, which is carried by said member 18, and is limited in itsvmovement in one direction by said adjusting screw 27 and' is yieldably heldin contact lwith said adjusting screw bv means of a spring 34 secured to a lugr 35 on the plate 38 and to a bracket 36, which is secured to `upper edge 32 and armed on its frontface adjacent to said teeth with a strip of card cloth 33.4

In operation the crank shaft 11 operating the lay 15 revolves twice to each revolution of the cam shaft 12, thus causing the lay to have two complete movements to each movement of the member 18 and plate 31. This movement brings the plate 31 to lie beneath the shuttle eac'h time the shuttle is beneath the magazine with a result that when an empty bobbin is ejected from the shuttle and replaced by a full bobbin, the empty one passes over the strip of card cloth 33- which engages the trailing end of the yarn and causes the same to be caught by the teeth 32 and jerked free of the iiying shuttle, thereby preventing it from being carried in the Warp with the before mentioned disadvantages.

Having thus fullyr described my said invention, what I claim as new and desire to secure by Letters Patent, is:

l. In' a -filling replenishing loom, a lay, a shuttle box thereon, a reciprocating thread-catcher adapted to engage the lling between the shuttle-box and the discharged iilling-carrier at the time of filling change and means permanently connectedi to the thread-catcher and to a working shaft of the machine to move the thread-catcher reciprocatingly toward and fromthe lay, snbstantially as set forth.

2. In a filling'replemshing loom, a lay, a shuttle box thereon, and means for withdrawing the thread end from the shuttlebox when filling change takes place comprisin a member adapted. to engage the face o the lay at the time of chan e, means on the face of the member to ip t e thread and means to move the mem er constantly to and fro on the loom.

3. An attachment for 4looms comprising a member mounted to oscillate longitudi nally of the loom adjacent .to the position where the bobbinsare changed and provided with means adapted to catch the trailing thread of the released bobbin, and a connection between said attachment and the machine cam-shaft for operating the same with an. accelerated movement at the .time

loom, said means comprising ositive con- .nections from the device to t e cam-shaft of the loom.

5. An attachment for looms comprising a member pivoted adjacent to the bobbin chan ing position for movement longitu-v dina y ofthe loom, a member extending upwardly from said pivoted member armed member and the cam shaft of the machine,

substantially set forth.

6. In a filling-replenishing loom, a lay and shuttle-boxes, a member pivoted on the loom frame, a thread-catcher thereon, and connections from said member to a moving shaft of the loom to oscillate the threadcatcher once for every two oscillations of the lay.

7. In a loom, a lay and shuttle-boxes, a member pivoted on the loom frame, a thread-catcher pivoted thereon and adapted to bear against the lay, supporting means on the pivoted member against which the thread-catcher normally rests, yielding means to hold the thread-catcher against the supporting means and a link attached to the pivoted member and to the cam-shaft of the loom.

8. In a loom, the combination with the bobbin-changin mechanism and the layoperating mec anism, of an attachment comprising a member pivoted adjacent the position where the bobbins are changed, a connection between said member and the cam-shaft of the machine whereby said member is operated once to each two operations of the lay, a member projecting up from said pivoted member formed with a toothed upper edge and armed with threadengaging means, whereby the trailing thread of the ejected bobbin is caught and held from being carried into the warp by the shuttle, substantially as set forth.

9. A filling thread extracting mechanism for looms, comprising a thread catcher, a pivot therefor, and a pitman adapted to b permanently connected at one end to the thread catcher-and at the other end to a crank on a moving shaftv of the loom, substantially as set forth.

10. .In a lling replenishing loom, means to eject a filling carrier and a device constantly oscillating across the path of ejected filling carriers, said device comprising means to grip the exhausted thread fadjacent its en, and withdraw it from the loom, substantially as set forth.

In witness whereof, I have hereunto set my hand and seal at Baltimore, Md., this 22nd day of December, A, D. nineteen hundred and nineteen.

Witnesses:

FRANK L. HULL, EUGENE H. 4Twamns. 

